SUB Ported Enclosure Volume

[bondj0007 10+ year member]

i have a Pioneer sub which is dual 2 ohm VC and rated at 400wrms, more details in link:

http://www.pioneer.eu/eur/products/25/130/201/TS-W307D2/index.html

the manufacturer recomended volume for sealed box is of: 24 - 49,6 litres but what about the volume of a ported.

SO WHAT I NEED HELP IS: How much Volume/Space (litres or cubic feet) should i do a PORTED enclosure for this pioneer sub????

THANKS

Click to read more...

 

[bondj0007 10+ year member]

nobody can guide me in some way in order to find myself an adequate VOLUME FOR A PORTED Enclosure for my sub????

cheers

 

[BEAVER.989 10+ year member]

While not exactly scientific, I've noticed a bit of a pattern, true with most subs...

The largest recommended sealed enclosure tends to be pretty close to the smallest recommended vented enclosure... Increase that by about 50% and you should find the sweet spot.

...Or you could plug all of the ts parameters into a calculator to get a more "scientific" answer.

 

[bondj0007 10+ year member]

ok thanks alot for your observation mate!

do you know of a calculator that provides you the volume required for a ported enclosure for a sub using TS parameters???

thanks

 

[BEAVER.989 10+ year member]

Check this out...

http://www.diysubwoofers.org/prt/ported1.htm

 

[bondj0007 10+ year member]

thanks very much mate!!!!

i came up with the folowing results for my sub:

Ported enclosure optimum volume: 56.2liters (1.98cu. ft) tuned at 31Hz

Is 56.2litres the volume including the Port airm Subwoofer displacement, etc??? or the air needed without including the Port and sub????

So would 31Hz tuned box be good for Electronic music (and other music)??

thanks for your help

 

[bondj0007 10+ year member]

OK guys, i found all of the following:

ported box net volume: 56.21litres or 1.985 cu.ft Tuned t 31Hz

Sub displacement: 2.16ltres or 0.076 cu.ft

MDF to use: .75"

& all T/S params

HOW (LINK OR something) CAN I CALCULATE WHICH PORT AREA & PORT LENGTH TO USE????

if someone gives me some link or help for this quest i'll be almost there

thanks

 

[BEAVER.989 10+ year member]

Scroll about 1/4 of the way down...

http://www.bcae1.com/spboxnew2.htm

 

[bondj0007 10+ year member]

that link you gave me is for Round ports and also you need to know the port size before hand!

i need something that CALCULATES THE PORT AREA BASE ON THE BOX VOLUME???!

 

[BEAVER.989 10+ year member]

You don't want a round port?

Search for subwoofertools.com, I think?

They have a slot port calculator, but I'm not sure about it's accuracy.